ʻO nā pono o nā Bristles: 1. Mea maikaʻi: ʻO nā mea nylon Kelemania e hana i ka bristle me ka lōʻihi o ke ola.2. He lōʻihi ke ola o nā mea nylon ma mua o PP.Kōkua i ka mea kūʻai aku e mālama i ke kumu kūʻai.3. Hoʻokahi-mould hana o ka bristle, e hoʻomaʻamaʻa ʻoi aku ka maʻalahi me ka ʻole o ke āpau ma waena o nā bristles.